My municipality tried this whole incinerating thing.
The short version: the technology wasn't up to the task, the amount of energy they got out of it was woefully inadequate, the company went out of business.
Incineration technology just doesn't sound like where it needs to be, and it doesn't produce energy in a way that is worth actually doing.
It may be a good idea in theory, but in practice, I don't think it works very well.
Without having the whole story, I will say this- power plants should be designed by power plant engineers. Many of the smaller power plants out there which burn %byproduct or %unwanted_materials are not designed by people who design power plants. There are a lot of Engineering/Procurement/Construction (EPC) companies out there who think "we did a recycling facility before, we put in some gas compressors and diesel engines at that landfill on the other side of town to burn landfill gas, a steam power plant is no problem!".
But solid fuels are a lot more tricky to combust compared to gas. They are trickier to design transport for- conveyor systems that don't have inherent blockage points are an art and a science. The ash is also a solid, but very corrosive, abrasive, and toxic, and needs special conveyors. Pollution controls are a whole 'nother science and improperly designed systems won't stay operating long without serious problems. The owner doesn't know all this, however, and doesn't have the experience to know that they should be rejecting some bidders for lack of experience. They go for the lowest reasonable bid and then when things don't work, the EPC finds every excuse under the sun on why they couldn't possibly have known better.